Hypophosphorous Acid Properties, Molecular Formula, Applications - WorldOfChemicals

Hypophosphorous Acid Properties

Hypophosphorous Acid

Elastosil® N2010-Product_Structure
Molecule 3D Structure Image
Elastosil® N2010-Molecule 3D Structure
Molecule Structure Image



Hypophosphorous acid is a phosphorus oxoacid and a powerful reducing agent. It is used in the formulation of pharmaceuticals, discoloration of polymers, water treatment, retrieval of precious or non-ferrous metals. Its main use is for electroless plating; i.e. deposition of select metal films from solution on a sensitized surface.

Chemical Properties

Acidity 1.2
Appearance Colorless, deliquescent crystals or oily liquid
Boiling Point 130 °C
CAS Number 6303-21-5
Density 1.493 g/cm3
EINECS Number 228-601-5
IUPAC Name Phosphinic Acid
InChI 1S/H3O2P/c1-3-2/h3H2,(H,1,2)
Melting Point 26.5 °C
Molar Mass 66.00 g/mol
Molecular Formula H3PO2
Molecular Shape Pseudo-tetrahedral
RTECS Number SZ6400000
Related Compounds Sodium Hypophosphite;Barium Hypophosphite
Solubility Miscible
Synonyms Hydroxy(oxo)-λ5-Phosphane;Hydroxy-λ5-Phosphanone;Oxo-λ5-Phosphanol;Oxo-λ5-Phosphinous Acid